Vijay Viswanathan

Dr. Vijay Viswanathan


Research Focus & Metrics

Academic Career Length

31Years (1996-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 September 2022 in The Lancet Neurology
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Journal Article
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MEMelissa A Elafros
Melissa A Elafros
HAHenning Andersen
Henning Andersen
DBDavid L Bennett
David L Bennett
Masha SavelieffMasha Savelieff
Masha Savelieff
VVVijay Viswanathan
Vijay Viswanathan
EFEva L. Feldman
Eva L. Feldman

9 December 2022 in Healthcare
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Journal Article
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NKNarendra N. Khanna
Narendra N. Khanna
Mahesh A MaindarkarMahesh A Maindarkar
Mahesh A Maindarkar
VVVijay Viswanathan
Vijay Viswanathan
JFJosé Manuel Mattos Fernandes e Fernandes
José Manuel Mattos Fernandes e Fernandes
SPSudip Paul
Sudip Paul
JSJasjit S. Suri
Jasjit S. Suri
Motivation: The price of medical treatment continues to rise due to (i) an increasing population; (ii) an aging human growth; (iii) disease prevalence; (iv) a rise in the frequency of patients that utilize health care services; and (v) increase in the price. Objective: Artificial Intelligence (AI) is already well-known for its superiority in various healthcare applications, including the segmentation of lesions in images, speech recognition, smartphone personal assistants, navigation, ride-sharing apps, and many more. Our study is based on two hypotheses: (i) AI offers more economic solutions compared to conventional methods; (ii) AI treatment offers stronger economics compared to AI diagnosis. This novel study aims to evaluate AI technology in the context of healthcare costs, namely in the areas of diagnosis and treatment, and then compare it to the traditional or non-AI-based approaches. Methodology: PRISMA was used to select the best 200 studies for AI in healthcare with a primary focus on cost reduction, especially towards diagnosis and treatment. We defined the diagnosis and treatment architectures, investigated their characteristics, and categorized the roles that AI plays in the diagnostic and therapeutic paradigms. We experimented with various combinations of different assumptions by integrating AI and then comparing it against conventional costs. Lastly, we dwell on three powerful future concepts of AI, namely, pruning, bias, explainability, and regulatory approvals of AI systems. Conclusions: The model shows tremendous cost savings using AI tools in diagnosis and treatment. The economics of AI can be improved by incorporating pruning, reduction in AI bias, explainability, and regulatory approvals.

25 May 2023 in Diabetes/Metabolism Research and Reviews
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Journal Article
Open access
PCPam Chen
Pam Chen
NVNalini Campillo Vilorio
Nalini Campillo Vilorio
KDKetan Dhatariya
Ketan Dhatariya
WJWilliam Jeffcoate
William Jeffcoate
RLRalf Lobmann
Ralf Lobmann
FGFran Game
Fran Game
Aims: Principles of wound management, including debridement, wound bed preparation, and newer technologies involving alternation of wound physiology to facilitate healing, are of utmost importance when attempting to heal a chronic diabetes‐related foot ulcer. However, the rising incidence and costs of diabetes‐related foot ulcer management necessitate that interventions to enhance wound healing of chronic diabetes‐related foot ulcers are supported by high‐quality evidence of efficacy and cost effectiveness when used in conjunction with established aspects of gold‐standard multidisciplinary care. This is the 2023 International Working Group on the Diabetic Foot (IWGDF) evidence‐based guideline on wound healing interventions to promote healing of foot ulcers in persons with diabetes. It serves as an update of the 2019 IWGDF guideline.Materials and Methods: We followed the GRADE approach by devising clinical questions and important outcomes in the Patient‐Intervention‐Control‐Outcome (PICO) format, undertaking a systematic review, developing summary of judgements tables, and writing recommendations and rationale for each question. Each recommendation is based on the evidence found in the systematic review and, using the GRADE summary of judgement items, including desirable and undesirable effects, certainty of evidence, patient values, resources required, cost effectiveness, equity, feasibility, and acceptability, we formulated recommendations that were agreed by the authors and reviewed by independent experts and stakeholders.Results: From the results of the systematic review and evidence‐to‐decision making process, we were able to make 29 separate recommendations. We made a number of conditional supportive recommendations for the use of interventions to improve healing of foot ulcers in people with diabetes. These include the use of sucrose octasulfate dressings, the use of negative pressure wound therapies for post‐operative wounds, the use of placental‐derived products, the use of the autologous leucocyte/platelet/fibrin patch, the use of topical oxygen therapy, and the use of hyperbaric oxygen. Although in all cases it was stressed that these should be used where best standard of care was not able to heal the wound alone and where resources were available for the interventions.Conclusions: These wound healing recommendations should support improved outcomes for people with diabetes and ulcers of the foot, and we hope that widescale implementation will follow. However, although the certainty of much of the evidence on which to base the recommendations is improving, it remains poor overall. We encourage not more, but better quality trials including those with a health economic analysis, into this area.

26 July 2012 in PLOS ONE
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VVVijay Viswanathan
Vijay Viswanathan
SKSatyavani Kumpatla
Satyavani Kumpatla
VAVigneswari Aravindalochanan
Vigneswari Aravindalochanan
RRRajeswari Rajan
Rajeswari Rajan
CCC Chinnasamy
C Chinnasamy
AKAnil Kapur
Anil Kapur
Diabetes mellitus (DM) is recognised as an important risk factor to tuberculosis (TB). India has high TB burden, along with rising DM prevalence. There are inadequate data on prevalence of DM and pre-diabetes among TB cases in India. Aim was to determine diabetes prevalence among a cohort of TB cases registered under Revised National Tuberculosis Control Program in selected TB units in Tamil Nadu, India, and assess pattern of diabetes management amongst known cases. 827 among the eligible patients (n = 904) underwent HbA1c and anthropometric measurements. OGTT was done for patients without previous history of DM and diagnosis was based on WHO criteria. Details of current treatment regimen of TB and DM and DM complications, if any, were recorded. A pretested questionnaire was used to collect information on sociodemographics, habitual risk factors, and type of TB. DM prevalence was 25.3% (95% CI 22.6–28.5) and that of pre-diabetes 24.5% (95% CI 20.4–27.6). Risk factors associated with DM among TB patients were age (31–35, 36–40, 41–45, 46–50, >50 years vs <30 years) [OR (95% CI) 6.75 (2.36–19.3); 10.46 (3.95–27.7); 18.63 (6.58–52.7); 11.05 (4.31–28.4); 24.7 (9.73–62.7) (p<0.001)], positive family history of DM [3.08 (1.73–5.5) (p<0.001)], sedentary occupation [1.69 (1.10–2.59) (p = 0.016)], and BMI (18.5–22.9, 23–24.9 and ≥25 kg/m2 vs 50 years vs <30 years) [2.24 (1.1–4.55) (p = 0.026); 6.96 (3.3–14.7); 3.44 (1.83–6.48); 4.3 (2.25–8.2) (p<0.001)], waist circumference [<90 vs. ≥90 cm (men), <80 vs. ≥80 cm (women)] [3.05 (1.35–6.9) (p = 0.007)], smoking [1.92 (1.12–3.28) (p = 0.017)] and monthly income (5000–10,000 INR vs <5000 INR) [0.59 (0.37–0.94) (p = 0.026)]. DM risk was higher among pulmonary TB [3.06 (1.69–5.52) (p<0.001)], especially sputum positive, than non-pulmonary TB. Nearly 50% of TB patients had either diabetes or pre-diabetes.

5 December 2024 in Nature Reviews Neurology
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Masha SavelieffMasha Savelieff
Masha Savelieff
MEMelissa A. Elafros
Melissa A. Elafros
VVVijay Viswanathan
Vijay Viswanathan
TJTroels S. Jensen
Troels S. Jensen
DBDavid L. Bennett
David L. Bennett
EFEva L. Feldman
Eva L. Feldman

23 March 2018 in Scientific Reports
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Journal Article
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DSDornadula Sireesh
Dornadula Sireesh
UDUmapathy Dhamodharan
Umapathy Dhamodharan
KEKrishnamoorthy Ezhilarasi
Krishnamoorthy Ezhilarasi
VVVijay Viswanathan
Vijay Viswanathan
RMRamkumar Kunka Mohanram
Ramkumar Kunka Mohanram
We investigated the association of redox regulator Nuclear factor erythroid 2-related factor 2 (Nrf2) and inflammatory cytokines as well as clinical remission in patients with recent onset type 2 diabetes (DM). Blood was collected from 180 DM patients (105 males/75 females) and 150 control subjects (86 males/64 females). Blood glucose, HbA1c, lipid profile and Nrf2 levels were determined along with circulatory cytokines in study subjects. The data were adjusted with confounding factors such as age and sex using multiple logistic regression analysis. We found that Th1/Th2 and oxidative stress markers were significantly elevated, whereas Nrf2 and its downstream targets were decreased in peripheral blood mononuclear cells (PBMCs) of DM subjects when compared with control. The circulatory levels of Nrf2 showed a positive correlation with Th2 cytokines and negative correlation to Th1 cytokines. Further, the impaired insulin secretion in pancreatic β-cells observed due to cytokine stress has been restored by activation of Nrf2 as assessed by glucose-stimulated insulin secretion (GSIS). This study identifies Nrf2 plays a central role in skewing Th1 and Th2 dominance in the progression of diabetes.